$337 Cheap Alaska Airlines flights Denver (DEN) to Petersburg (PSG)

View $337 flight on Wed, Jul 30, 2025Opens in a new window

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$337 Cheap Alaska Airlines flights Denver (DEN) to Petersburg (PSG)

Prices were available within the past 7 days and start at $337 for one-way flights and $728 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep 20 - Fri, Oct 3
DEN
Denver
PSG
Petersburg
$728 Roundtrip, found 1 day ago
$728
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 20 from Denver to Petersburg, returning Fri, Oct 3, priced at $728 found 1 day ago
Alaska Airlines
Wed, Sep 24 - Fri, Oct 3
DEN
Denver
PSG
Petersburg
$729 Roundtrip, found 1 day ago
$729
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 24 from Denver to Petersburg, returning Fri, Oct 3, priced at $729 found 1 day ago
Alaska Airlines
Mon, Sep 22 - Fri, Oct 3
DEN
Denver
PSG
Petersburg
$732 Roundtrip, found 1 day ago
$732
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Sep 22 from Denver to Petersburg, returning Fri, Oct 3, priced at $732 found 1 day ago
Alaska Airlines
Fri, Sep 19 - Fri, Oct 3
DEN
Denver
PSG
Petersburg
$737 Roundtrip, found 1 day ago
$737
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Sep 19 from Denver to Petersburg, returning Fri, Oct 3, priced at $737 found 1 day ago
Alaska Airlines
Wed, Jul 30 - Wed, Aug 6
DEN
Denver
PSG
Petersburg
$780 Roundtrip, found 21 hours ago
$780
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Wed, Jul 30 from Denver to Petersburg, returning Wed, Aug 6, priced at $780 found 21 hours ago
Flights from Denver (DEN) to Petersburg (PSG)
Origin airport
Denver Intl.
Destination airport
Petersburg
Airlines serving
Alaska Airlines
Popular airline
Alaska Airlines
Distance
1726 mi

Frequently asked questions

How much is an Alaska Airlines flight from Denver Intl. Airport (DEN) to Petersburg Airport (PSG)?
Apply the "Price (lowest to highest)" filter on Expedia to find cheap Alaska Airlines round-trip flights from $728 from DEN to PSG. Affordable one-way tickets from $337 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DEN to PSG with Alaska Airlines?
Alaska Airlines flights from DEN to PSG are typically cheaper in the low season and outside of major public holidays or events. Traveler demand --- and prices --- are higher during busy periods like those.
What is the cheapest time to book flights from Denver Intl. Airport (DEN) to Petersburg Airport (PSG) with Alaska Airlines?
Start searching one to three months ahead of your departure date to find cheap fares on Alaska Airlines flights from Denver Intl. Airport (DEN) to Petersburg Airport (PSG). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Denver Intl. Airport (DEN) to Petersburg Airport (PSG)?
Use our "Nonstop" filter when searching for direct Alaska Airlines flights from DEN to PSG. It's also an easy way to compare other airlines offering the same nonstop trip.
What is the earliest Alaska Airlines flight from DEN to PSG?
Find Alaska Airlines's earliest flights from DEN to PSG by using the "Early Morning" and "Morning" filters. Not only will you get to where you're going sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Petersburg?
Alaska Airlines flights from Denver Intl. Airport (DEN) to Petersburg arrive at Petersburg Airport (PSG). This is the main entry point here.
Why fly with Alaska Airlines from DEN to PSG?
Jetting off from DEN to PSG with Alaska Airlines means enjoying plenty of perks, including an excellent in-flight experience and top-tier customer service. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That's in addition to the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Denver Intl. Airport (DEN) to Petersburg Airport (PSG)?
It's usually possible to reschedule or cancel your flight, although additional fees may apply if your booking was made more than 24 hours ago. Want to keep your options open? Make use of our "Changes included" or "No cancel fee" filter to find flights that won't penalize you if you need to revise your plans. To modify your itinerary, go to "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.